Privacy and usability of image and text based challenge questions authentication in online examination.

Abrar Ullah Hannan Xiao Mariana Lilley Trevor Barker

Published in: ICETC (2014)

Keyphrases

image features
image data
image content
input image
image authentication
image segmentation
image retrieval
image representation
image collections
single image
low level
image analysis
image classification
multiscale
image pixels
online learning
region of interest
feature points
multimedia
tamper detection
fragile watermarking
test images
security issues
high resolution
identity management
image regions
segmentation method